From 80ffd1883d8d76ed32dab40fc4b10d10217a33f4 Mon Sep 17 00:00:00 2001
From: Natalia Serrano <natalia.serrano@qindel.com>
Date: Tue, 30 Sep 2025 11:13:05 +0200
Subject: [PATCH] refs #2852 do not let mksquashfs take all CPU cores

---
 CHANGELOG.md                                     |  6 ++++++
 boottools/btog.py                                | 14 ++++++++++++--
 includes/etc/initramfs-tools/scripts/VERSION.txt |  2 +-
 3 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a8c9e3d..cfa16ff 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.14.2] - 2025-09-30
+
+### Changed
+
+- Don't let mksquashfs take all CPU cores
+
 ## [3.14.1] - 2025-09-24
 
 ### Fixed
diff --git a/boottools/btog.py b/boottools/btog.py
index 0f1c463..bab2231 100644
--- a/boottools/btog.py
+++ b/boottools/btog.py
@@ -327,8 +327,18 @@ def mksquashfs (bttargetdir, btrootfsmnt):
         now = datetime.datetime.now(datetime.timezone.utc).strftime ('%Y%m%d-%H%M%S%z')
         os.rename (f'{bttargetdir}/ogclient.sqfs', f'{bttargetdir}/ogclient.sqfs.{now}')
 
-    ## uses all CPU cores available, even within docker
-    utils.run (['mksquashfs', btrootfsmnt, f'{bttargetdir}/ogclient.sqfs', '-e', 'var/lib/apt/lists', '-e', 'usr/share/doc'])
+    ## for some reason mksqashfs uses all CPU cores available, even within docker
+    ## so, let's count the number of cores...
+    fd = open ('/proc/cpuinfo', 'r')
+    nproc = 0
+    while True:
+        line = fd.readline()
+        if not line: break
+        if 'processor' in line: nproc += 1
+    ## ...and leave one core unused
+    nproc = str (nproc-1)
+
+    utils.run (['mksquashfs', btrootfsmnt, f'{bttargetdir}/ogclient.sqfs', '-processors', nproc, '-e', 'var/lib/apt/lists', '-e', 'usr/share/doc'])
     os.chmod (f'{bttargetdir}/ogclient.sqfs', 0o744)
 
     utils.write_md5 (f'{bttargetdir}/ogclient.sqfs')
diff --git a/includes/etc/initramfs-tools/scripts/VERSION.txt b/includes/etc/initramfs-tools/scripts/VERSION.txt
index d524d5f..3735c80 100644
--- a/includes/etc/initramfs-tools/scripts/VERSION.txt
+++ b/includes/etc/initramfs-tools/scripts/VERSION.txt
@@ -1 +1 @@
-OpenGnsys Client 3.14.1
+OpenGnsys Client 3.14.2
-- 
2.40.1